#include <stdio.h>
#include <string.h>
int is_within(char, const char*);
int main(int argc, char* argv[])
{
	const char* p = "I am your dad";
	int flag;
	flag = is_within('f', p);
	printf("The char is winthin %d\n", flag);
	
	return 0;
}
int is_within(char ch, const char* p)
{
	if(strchr(p, ch))
		return 1;
	else
		return 0;		
}
